If they weren't meant to be speaking at all, then what were they meant to be doing? Kissing obviously, but Castiel had been cautioned against that. Cole had warned him that if he were to do this, then he would continue to see Meg. Whether or not he wanted that, and Cas wasn't sure what he wanted. Meg tasted good - better than anything he'd tasted thus far, and her hands on his vessel made it unusually warm.
"Meg, I don't..." he tried to point out, her tongue making an entirely convincing argument. "I've never..."
The positioning was all wrong, so he picked her up and put her back against the wall again, kissing her deeper. For some reason, this was more comfortable. This he remembered and knew how to do.